B297D Diagnostic Trouble Code

B297D is a kind of OBD-II Diagnostic B-Body Diagnostic Trouble Code.

It is considered generic because it applies to all makes and models of vehicles, although specific repair steps may be different depending on your car model.

Symptoms

Symptoms of a B297D diagnostic trouble code may include:

Carbon Buildup on O2 Sensor
Malfunction Indicator Lamp (MIL) illuminated
Hesitation upon acceleration
The engine oil will exhibit dilution from the ECUs attempts to increase engine temperature. Some vehicles advance the fuel injection timing slightly after top center to afterburn a small amount of fuel to increase exhaust temperatures. Some of this fuel enters the crankcase. When the ECU determines the necessity to regenerate the DPF, the service life of the oil be shortened significantly

Possible Causes :

A large vacuum leak would cause a massive amount of un-metered air to enter the intake manifold resulting in an overly lean mixture.
Faulty IMRC actuator/sensor
Some aftermarket accessories and performance modifications

Repair Processes :

Look at the plug wires to make sure they are not burnt or laying on the exhaust. You might continue by connecting the scanner to the vehicle diagnostic connector and retrieving all stored codes and freeze frame data. Find out what kind of system you have and verify that voltage to the fuel level sensor is present at the fuel pump wiring harness.

Process Tips

Diagnostic trouble code B297D is not difficult to diagnose and repair. Thus, it always pays to have a qualified technician to look after your vehicle should this error code arise.

Diagnosing this code requires the engine to be in good running shape, without unmetered air entering the engine. If other codes that relates to misfiring condition, lean running or air entering the engine is present, then you must first fix those error codes before B297D.

Fortunately, B297D is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B297D Trouble Code For Specific Cars

B297D Renault Trafic HO2S Heater Control Circuit High (Bank 1 Sensor 2)
B297D Wolseley 12
B297D Ferrari F310 Intermediate Shaft Speed Sensor Circuit No signal
B297D Renault Espace Gear Shift position short to battery
B297D Hammel Hammel Passenger Side Satellite Communication Circuit Short to Ground
B297D Toyota Celica O2 Sensor Circuit Malfunction (Bank 1 Sensor 3)
B297D Daihatsu Charade Gear Shift Lock Solenoid Circuit High